* The power of Postbox Conversation Views has now been integrated into message compose. In addition to traditional message quoting, you can now compose messages in "Summarize Mode" which provides a clean "who-said-what" summary of the conversation. For additional detail, please see the following Knowledge Base Article. Summarize mode applies to reply and forward as inline for HTML composition* Ability to toggle between Reply and Reply All from the compose window via a toolbar button* Ability to configure Quick Reply to always default to Reply All via Preferences | Compose | Advanced* Support for Mail As PDF on Mac OS X from the Mac print dialog in your favorite Mac application* Add a keyboard shortcut for Paste Without Formatting to the compose window: cmd-shift-v (Mac) and ctrl-shift-v (Windows)* Quick Look is now implemented for attachments in the compose window on Mac OS X. Select the attachments and use the space bar to quick look them.* Fixed an issue opening iWork (Pages, Keynote, and Numbers) attachments on Mac OS X* Fixed an issue with tooltips not always disappearing correctly on Mac OS X when using Spaces* Fixed an issue with Spotlight not showing the correct subjects* Performance and stability improvements with large sets of mail* Incorporated Mozilla Firefox security updates through version 3.6.11